1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
qaws [65]
3 years ago
14

A railroad track rises 30 feet for every 400 feet of track. What is the measure of the angle of elevation of the track?

Mathematics
1 answer:
gtnhenbr [62]3 years ago
3 0

Answer:

Step-by-step explanation:

Rising 30 feet for every 400 feet of track is not a very large angle of elevation.  We set this up as a right triangle to use right triangle trig to solve for the missing angle.  The height is 30 and the hypotenuse is 400.  The height is the side opposite the angle in question, and the hypotenuse is the hypotenuse! This is the sin ratio.  Setting up the ratio using our info:

sin\theta=\frac{30}{400}

When you are looking for a missing angle measure, as we are here, use the 2nd-->sin buttons to find the inverse of sin, which looks like this:

sin^{-1}(

Enter in the fraction 30/400 after the parenthesis and then hit enter to get the angle measure of 4.3 degrees.

You might be interested in
How do u solve this question -3.618 ÷ 1.8
inna [77]
-3.618 / 1.8 = -2.01

you can use long division or a calculator to do this, but calculator is a lot easier.


3 0
3 years ago
What is -2(5x-1)-3=10x
tekilochka [14]
-2(5x-1)-3=10x -10x+2-3=10x 2-3=x x=-1
5 0
3 years ago
Read 2 more answers
The school cafeteria served three kinds of lunches today to 225 students. The students chose the cheeseburgers three times more
r-ruslan [8.4K]

1)

Let the number of fish sandwiches sold br represented by x

Then the number of grilled cheese sold is 2X

and the number of cheeseburgers 3(2x)

x + 2x + 3(2x) = 225

and solve

2)

Let x represent the no. of pounds of peanuts

Then x + 14 represents the no of pounds of the mixture

And

(2.25)x + (3.25)(14) = (2.65)(x + 14

and solve

3) Try on your own

plz mark me as brainliest :)

3 0
3 years ago
A recipe requires 3 cups of flour to make 27 dinner rolls. How much flour is needed to make 9 rolls?
Rudik [331]
It takes 1 cup of flour.
8 0
3 years ago
Read 2 more answers
Is 6 less than 6.00?
Nadya [2.5K]
No, they are the same value.
3 0
3 years ago
Other questions:
  • Domain of f(x)= x+5/(x^2-1)
    14·1 answer
  • Massimo has $90 on his bus pass every time he writes the bus he spends $2.50 write and solve an equation that Massimo can use to
    11·2 answers
  • Two consecutive odd numbers are such that seven times the smaller, subtracted from nine times the bigger, gives 144. Find the nu
    7·1 answer
  • K = 3/4 is a solution to the inequality 12k + 2 &lt; 12.<br><br> True<br> False
    6·2 answers
  • Assume that when adults with smartphones are randomly​ selected, 49​% use them in meetings or classes. If 9 adult smartphone use
    8·1 answer
  • A square market has an area of 36 square meters. How long is each side?
    15·1 answer
  • Find the measure of each acute angle.<br> 3xº<br> 2x<br> 19<br> 3.2<br> and 20
    11·2 answers
  • Which value us not a solution to 3 &gt; w + 17
    12·2 answers
  • Evaluate 210three x 12three
    13·1 answer
  • Find the area of the parallelogram with the given information:​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!